Our readers keep the lights on and the garage heater humming. As an Amazon Associate, I earn from qualifying purchases.
Specs are compiled from manufacturer listings and verified buyer reviews and can change over time — please confirm the key details on the product page before buying.
Bolting a newer engine into an older truck usually turns into a weekend of cutting, grinding, and cursing at misaligned holes. The right universal motor mounts turn that chaos into a clean drop-in, saving you from endless fabrication. This guide breaks down nine kits that handle everything from classic SBC swaps to modern LS conversions, with an eye on fitment, hardware, and real-world holding power.
I’m Mo Maruf — the founder and writer behind GoCarLife. This guide is built by comparing the manufacturers’ published specifications and the patterns across verified customer reviews, so you get each pick’s real strengths and trade-offs instead of marketing spin.
Whether you are refreshing a daily driver or building a weekend toy, the right universal motor mounts keep your engine secure and your swap on schedule, and this guide shows you which kit earns its place under your hood.
Our Picks at a Glance
How To Choose The Best Universal Motor Mounts
Universal motor mounts bridge the gap between your desired engine and a chassis never designed for it. Before you click buy, you need to know what kind of swap you are doing, how much fabrication you are willing to do, and what the mount is actually made of.
Match the Mount to the Engine Family
The biggest mistake is grabbing a kit labeled “universal” without checking which engine blocks it actually fits. Some kits are engineered specifically for Chevrolet LS engines (LS1, LS2, LS3, LS6, LS7), while others are built for the older Small Block Chevy (SBC) or Big Block Chevy (BBC) motors like the 350, 396, and 454. A kit built for an LS block has different bolt patterns than a kit for a classic small block, so match the mount to the engine you are actually dropping in, not the one you wish you had.
Decide How Much You Want to Weld
Universal mounts split into two camps: bolt-on kits that use the factory frame mounts and weld-in kits that come with bare frame plates you must attach yourself. Bolt-on kits are faster and friendlier for a home garage, but they only work if your chassis has the right mounting holes. Weld-in kits give you total freedom on custom frames, rock crawlers, and street rods, but they demand solid welding skills and a few extra hours under the car.
Look for Slotted Adjustment, Not Fixed Holes
Engine placement is rarely perfect on the first try, and a mount with slotted holes gives you room to slide the engine forward or backward to clear headers, oil pans, and transmission crossmembers. Fixed-hole mounts lock you into one position and often force you to buy relocation plates later. Kits with slotted adjustment holes save you the most test-fit headaches.
Quick Comparison
| Model | Best For | Material | Mount Type | Adjustment | Amazon |
|---|---|---|---|---|---|
| ICT Billet SBC to LS Adapter Plate★ Best Overall | SBC to LS swaps with stock mounts | Aerospace Billet Aluminum | Bolt-on Adapter | — | Amazon |
| Blackhorse Racing LS Swap MountsMost Versatile | Custchassis street rods & rock crawlers | Heavy Duty 3/16″ Steel | Weld-in Frame Tabs | 2 inches Slotted | Amazon |
| Ecotic LS Conversion MountsBuilt for Power | High-horsepower street builds | Heavy Duty Steel | Bolt-on Frame | — | Amazon |
| Goopool LS Swap Mounts | 1973-1998 Square Body GM trucks | High Carbon Steel | Bolt-on Frame | Slotted | Amazon |
| KUAFU LS Conversion Mounts | Budget-friendly LS swaps | Mild Steel | Bolt-on Frame | — | Amazon |
| 9.4102G Polyurethane Body Mounts | Cab & body mount replacement | Polyurethane | Universal Isolator | — | Amazon |
| Energy Suspension 9.4101G | Tacoma & truck body mount fixes | Hyper-Flex Polyurethane | Universal Isolator | — | Amazon |
| SHLPDFM 6-Piece LS Mount Set | Custom LS fabrication builds | Mild Steel TIG Welded | Weld-on Frame Brackets | — | Amazon |
| B.ZSSY Weld-in Mount Kit | SBC & BBC engine swaps | Alloy Steel | Weld-in Frame Plates | — | Amazon |
In‑Depth Reviews
1. ICT Billet SBC to LS Engine Motor Mount Adapter Plate
Our pick — over 4.5★ from 1,500+ verified ratings; the strongest balance of quality and price.
The machined-aluminum bridge that makes a classic SBC chassis accept a modern LS heart.
The stand-out spec here is the material: these plates are CNC-machined in Wichita, Kansas from USA-produced, aerospace-grade 3/8″ billet aluminum. That is not stamped steel — it is a precision part machined to OEM specifications, which is why the quality is the single most-praised aspect across owner feedback, with dozens highlighting the build over everything else.
Fitment is where this kit earns its keep. The plates are designed to move the crankshaft centerline up 0.17″ in the vehicle, which helps clear oil pans and crossmembers in tight swaps — the classic scenario being a 2003 LS 5.3 dropped into a 68 C10 using the stock mounts, as buyers report doing successfully. The included hardware (8 flat head bolts and 6 flange M10-1.5 bolts) means you are not hunting for fasteners on install day.
Owners praise the precision-machined slots and natural aluminum finish for both adjustability and looks. The recurring gripe is compatibility: several owners note these do not work with factory SBC mount brackets, and some found the passenger plate can hit a low-mounted Z06 A/C compressor bracket, usually fixed by swapping the plates side-to-side. The crowd favorite here — 4.8 stars across over 1,500 owners — speaks to a part that consistently lands right for LS-in-old-truck swaps.
What Owners Praise
- Aerospace-grade 3/8″ billet aluminum machined in the USA
- Raises crankshaft centerline 0.17″ for better clearance
- Complete hardware kit included in the box
The Fitment Caveats
- Not compatible with factory SBC mount brackets
- May need grinding on block webbing for bolt clearance
The precision pick: reach for these if you are shoehorning an LS into a classic truck and want a clean, bolt-on solution with real engineering behind it.
Look elsewhere if: you expect a true plug-and-play with untouched factory SBC brackets — this kit rewards a little test-fitting.
2. BLACKHORSE-RACING LS Swap Mounts Adjustable Conversion Kit
The cut-and-weld kit with two inches of slide room for true custom chassis work.
What sets this premium kit apart is raw adjustability: the plates bolt to the side of the LS block and give you 2 inches of slotted travel to slide the engine forward or reverse, while the included tabs offer 5.5 inches of usable length to cut and weld into your chassis. That dual adjustment is why owners say the slotted holes eliminate the need for the usual mount relocation plates.
The construction backs up the price point — the frame-side mounts use a very heavy duty 3/16″ plate, and the kit ships with 2 conversion motor mounts, 4 adapter plates, 2 nuts, 4 gaskets, and 10 screws. That is a comprehensive package for a street rod, rock crawler, or dune buggy where nothing else lines up off the shelf.
Its versatility shines in a documented 2UZ swap into an 80-series Land Cruiser, proving it works beyond GM engines. The honest caveat is the bushing quality: one owner reported the polyurethane bushings crumbled and had to be replaced, and another noted the included tabs did not fit his CJ7 and he made his own. This is a kit for builders who expect to do some custom work, not for someone wanting a pure bolt-on.
Why Builders Choose It
- 2 inches of slotted fore-and-aft engine adjustment
- Heavy duty 3/16″ plate on the frame-side mounts
- Full hardware kit with 10 screws included
Know Before You Buy
- Bushing quality drew a durability complaint
- Weld-on tabs may need customizing for some chassis
The fabricator’s choice: buy this if you are building a custom frame, street rod, or crawler and want maximum positional freedom with heavy-duty steel.
Think twice if: you want to avoid welding and expect factory bolt holes to line up without modification.
3. ECOTRIC LS Engine Motor Mounts Conversion Swap
Heavy-duty steel rated for serious horsepower and hard street use.
The headline spec here is the material: heavy duty steel that is impact-resistant and built to withstand intemperate weather and tough environments. That is not marketing fluff — owners mention running these mounts behind a 600 horsepower engine without an issue, which is the kind of real-world endorsement that separates a stout part from a decorative one.
This is a universal kit for Chevrolet LS series engines (LS1, LS2, LS3, LS6, LS7), designed to swap a newer LS into an older car or truck. The package includes 2 conversion motor mounts, 4 adapter plates, 2 nuts, and 4 gaskets — everything needed for the bolt-on install, though professional installation is recommended. The larger footprint, at 10.24 x 6.69 x 3.94 inches, gives it a solid stance on the frame.
Buyers call it “easy on the money,” praising the strength-to-price ratio. The trade-off is a smaller owner base, so long-term durability data is thinner than on the heavier-reviewed options. This is a strong mid-range pick for a street LS swap where you want confidence without paying premium money.
The horsepower verdict: this mount holds up where it counts — one owner confidently reports no issues at 600 horsepower, making it a smart mid-range choice for serious street builds.
4. Goopool LS Swap Motor Mounts for 1973-1998 Square Body Chevy/GMC
The purpose-built square-body solution with slotted adjustability and a proven following.
This is the one pick that is not truly “universal” — it is specifically engineered for 1973-1998 OBS and Square Body Chevy/GMC trucks including C10, C20, C1500, K1500, Jimmy, and Sierra in both 2WD and 4WD. That specificity is exactly why it works so well: no cutting, no guessing, just a mount that knows where the factory holes are. Owners confirm it handles a 6.0 LQ9 in a 87 Chevy Blazer and bolts right into the factory engine mounts.
The defining feature is the slotted adjustment for engine placement, which lets you fine-tune position to clear accessories and crossmembers. It is built from high carbon cold rolled steel with accurate accessory sizing, and it accepts a broad range of transmissions — 4L60E, 4L65E, TH350, TH400, TH700R4, 4L80 — so you are not locked into one gearbox. It also fits all Chevrolet LS series engines plus the 1999-2013 4.8L, 5.3L, 6.0L, and 6.2L Vortec truck engines.
Fit is the top praise, with owners calling it a cheaper alternative to Dirty Dingo mounts. The one honest nudge: some owners recommend a little grinding on the truck mounts during test-fit to save headaches, and the driver side can take longer to align than the passenger side. This is the best-balanced combination of precision, strength, and value in the list — 4.7 stars across 300+ owners is hard to argue with.
Why It Leads
- Slotted adjustment for precise engine placement
- Fits all LS engines plus 4.8L-6.2L Vortec truck motors
- Accepts 6 different transmission combinations
The Fine Print
- Limited to 1973-1998 GM square body trucks
- Light grinding on truck mounts may be needed for perfect fit
The smart swap choice: if you own a 73-98 Chevy or GMC truck and want an LS in it, this is the mount that slots in with the least drama.
Not for you if: your chassis is outside the 1973-1998 GM truck range — this one trades universality for a perfect square-body fit.
5. KUAFU LS Conversion Swap Motor Mounts
The budget-friendly LS swap mount that owners say fits perfectly and then some.
For a fraction of premium prices, this kit delivers high quality mild steel construction built to strict quality control standards, made to be cut to fit almost any truck or car. The package is generous: 2 conversion motor mounts, 4 adapter plates, 2 nuts, and 4 gaskets. Weighing in at 4.74 kg, it is a solid, substantial kit that does not feel flimsy in the hand.
What surprises owners is the versatility beyond the LS family — the bolt holes even fit other motors, as one owner discovered using it for an l67 swap. That cross-platform flexibility, combined with the powder-coated black finish, makes this a genuinely universal option despite the LS-focused marketing.
Owners call it “awesome for the price” and praise the perfect fit. The trade-off is a smaller review base, so it lacks the deep long-term data of the heavier-hitters. For a budget-conscious first swap, this is the one to grab.
The budget verdict: this is the entry-level pick that overdelivers — great quality and a fit owners call perfect, with bolt holes that work beyond just LS engines.
6. usvehj 9.4102G Universal Polyurethane Body Mounting Bushings
The polyurethane cushions that ride between frame and body to kill vibration and clunk.
This is a different kind of mount — these bushings sit between the frame and the body, cushioning road and engine vibrations before they reach you. The kit includes 4 plated metal washers, 2 plated metal sleeves, and 4 bushings, giving you 2 full sets. At 5.12 x 2.76 x 2.76 inches and just 0.93 kg, it is a compact package designed for universal applications.
The versatility is the story here: these work for transmission mounts, motor mounts, cab and body mounts, restorations, daily drivers, and custom body and kit cars — plus compressors, tool boxes, generators, and independent engines. Owners put them on tractor cabs, and one buyer plans to use six of these 2-packs to remove a 1-inch body lift on a 99 Jeep TJ, cutting the bolt sleeves down 1/8-inch to tighten to the frame better.
What wins people over is the real-world improvement — one owner noted a noticeable improvement in how their van handles over imperfect roads and bumps after install. The polyurethane runs soft enough to dampen vibrations for street use while outlasting the short-lived rubber originals. The honest note: these are not engine swap mounts, so buy them for body and cab isolation, not for holding a motor.
The isolation pick: if your goal is a quieter, smoother ride on imperfect roads, these polyurethane cushions deliver — one owner with half a century in the auto parts business called the quality undeniable.
7. Energy Suspension 9.4101G Universal Mount
The Tacoma’s favorite cure for sagging body mounts and front-end metallic rattle.
This single mount from Energy Suspension has built a reputation as the fix for a known Toyota problem — tired front body mounts on 2nd and 3rd gen Tacomas. At just 0.45 kg and measuring 3 x 4 x 4 inches, it is a small part with a big job: separating the body from the frame to stop metal-on-metal grinding noise. Owners confirm it eliminates the clunking over bumps and the metallic rattle from the front end.
The material does the heavy lifting: Hyper-Flex replacement polyurethane stands up well to contaminants that often destroy rubber, is engineered to not compress permanently, and delivers that sturdier feel over stock. It is the “stops grinding metal noise” cure-all that owners say makes a heck of a difference from stock, with the front body lifted by at least 1/16th in one owner’s case.
What wins people over is the fit — it is the most-praised aspect, with owners calling it a glove fit on 2006, 2019, and even 225,000-mile Tacomas. The honest caveats: some kits ship missing washers, alignment can take extra time on the driver side, and durability gets mixed feedback with a few noting radiator support cracking under heavy load. For a Tacoma owner chasing a rattle-free ride, this is the proven answer.
The Owner Consensus
- Active noise reduction — kills metallic rattle and clunking
- Glove-perfect fit on 2nd and 3rd gen Tacomas
- Hyper-Flex polyurethane resists rubber-killing contaminants
Watch Out For
- Missing washers reported in some kits
- Driver-side alignment can add 45 minutes
The Tacoma fix: if body sag or front-end rattle is plaguing your pickup, this is the part owners have trusted for thousands of miles.
Look elsewhere if: you are swapping an engine, not fixing body mounts — this one is all about isolation, not engine support.
8. SHLPDFM 6-Piece Silver LS Motor Mount Set
The TIG-welded six-piece set designed for street rod and off-road LS builds.
This kit is built squarely for “Street Rod” and “Off Road” rigs, and the construction matches that intent: mild steel, TIG welded, with corrosion-resistant, anti-aging polyurethane bushings designed for long service life. The package is comprehensive — 2 pcs motor mounts plus 4 pcs weld-on frame brackets — making it a full 6-piece setup for a custom swap.
The silver galvanized finish is the defining feature, and it cuts both ways. Owners confirm the mounts worked for an LS swap, but one noted the galvanization makes welding harder since the weld heat destroys the coating anyway. This is a kit for someone who knows they will be doing extra fabrication and welding to make it work in their specific chassis.
What wins people over is the value for the price and the solid TIG-welded construction. The honest caveat: expect to apply a little extra welding for safety and consider swapping the bushings for higher-quality polymer ones to reduce vibration further, as one owner did. This is not a bolt-on kit — it is a starting point for a custom build.
The builder’s kit: if you are planning a custom LS mount with extra fabrication and welding, this TIG-welded steel set is a solid, affordable foundation.
9. B.ZSSY Universal Engine Weld-in Motor Mount Kit
The weld-in kit for Small and Big Block Chevys like the 350, 396, and 454.
This kit takes the fabrication route, offering weld-in motor mounts compatible with Small and Big Block Chevrolet engines — the SBC 350, BBC 396, 454, and 4.3L V6 — replacing the OEM part number 91018040. The package includes 2 weld-in motor mounts, 2 bolts, and 4 frame plates, giving you everything needed to weld the mounts directly to your frame.
The build quality is the standout, with a smooth powder-coated finish and no sharp edges, so you will not cut your hands during install. The mounting holes align with existing chassis mounting points after you weld the frame plates in place. Owners call it “very well made” and note it is far cheaper than spending hours fabricating the mounts yourself.
What wins people over is the solid construction and the value — one owner called it one of the best items purchased off Amazon. The honest caveat: the frame-side bracket feels “very weak” on its own and is not suitable alone, meaning you should plan to reinforce it or weld it thoroughly. This is a smart buy for classic Chevy fans who weld.
The classic Chevy pick: if you are welding a 350 or a 454 into a project car, this kit is cheaper than fabricating your own and built solid enough to trust.
Understanding the Specs
Slotted Adjustment vs. Fixed Holes
A slotted mount has elongated holes that let you slide the engine forward or backward after it is loosely bolted in. This matters because you rarely know exactly where the engine needs to sit until you are test-fitting headers, oil pans, and transmission crossmembers. A mount like the BLACKHORSE-RACING kit offers 2 inches of travel; a fixed-hole mount locks you in and often forces relocation plates later. For a custom chassis, slotted adjustment is worth paying for.
Mild Steel vs. Billet Aluminum
The material determines how you install the mount and how strong it is. Billet aluminum (like the ICT Billet plates) is CNC-machined from a solid block — precise, corrosion-resistant, and weld-free bolt-on friendly, but you cannot weld it. Mild or alloy steel (like the KUAFU or ECOTRIC kits) is stronger for high-horsepower builds and can be welded to your frame, but it needs a powder-coated or painted finish to resist rust. Match the material to your chassis — bolt-on for factory holes, steel for custom frames.
FAQ
Will universal LS motor mounts fit my truck’s factory mounting holes?
What is the difference between a weld-in mount and a bolt-on mount?
Can I use the same motor mounts for an LS engine swap into any car?
How do I know if I need a body mount bushing instead of a motor mount?
Do these mounts raise or lower the engine position?
Will a universal mount kit work with a TH400 or 4L60E transmission?
How hard is it to install universal motor mounts at home?
What hardware comes in the box with these kits?
Final Thoughts: The Verdict
If you want one dependable pick, the universal motor mounts winner is the Goopool LS Swap Mounts because it combines chassis-specific precision with slotted adjustability at a price that undercuts premium brands. If you want the machined-aluminum precision of a true SBC-to-LS adapter, grab the ICT Billet plates. And for a custom street rod or rock crawler where you are welding everything anyway, the BLACKHORSE-RACING kit with its 2 inches of adjustment is the one to reach for.
How We Picked
We do not accept paid placement. Every pick is matched to a real buyer and a real use-case; we do not hands-on test units.
Sources & Methodology
Specifications: manufacturer listings and product documentation. Review insights: verified customer reviews, as of August 2026. Pricing: not shown on this page (it changes often); check the current price via the retailer link.
As an Amazon Associate, GoCarLife earns from qualifying purchases. This does not affect which products we feature.